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#1
10-04-2025, 10:18 AM
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Cross flow muffler (Stock type) water accumulation ??? potential rust problem...
I installed a new gardner exhaust system last year. Love the fit and finish. I've noticed upon start up alot of condensation coming out and recently its rust colored. I was thinking of drilling some weep holes in the bottom of the muffler to drain this condensation to keep the muffler from rusting out on the inside.
Has anyone else had this and/or drilled weep holes in their mufflers???? |
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#2
10-04-2025, 10:57 AM
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The original GM mufflers had weep holes on the ends. Check to make sure the muffler is not upside down.
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#3
10-04-2025, 11:06 AM
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I have a Gardner system sitting in the box. I'll have to pull the muffler out and see if there's any drain holes.
__________________
"Those poor souls have made the fatal mistake of surrounding us. Now we can fire in any direction" 1970 Trans Am RAIII 4 speed 1971 Trans Am 5.3 LM7 1977 Trans Am W72 Y82 1987 Grand National |
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#4
10-04-2025, 11:47 AM
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Condensation and rust will only be an issue if you never let the engine run up to normal temps. Once at operating temps any moisture inside the engines crank case or exhaust systen evaporates.
This is why I only start my old cars If I know I can let em run lor drive em long enough to " burn off" the condensation happenning until the engine reaches optimal running temps. Peter |
| The Following User Says Thank You to besserspat For This Useful Post: | ||
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#5
10-05-2025, 08:17 AM
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A top shelf old timer exhaust guy told me he drills a hole in every muffler he installs. I've done the same from that point forward.
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| The Following User Says Thank You to PAUL K For This Useful Post: | ||
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#6
10-05-2025, 01:28 PM
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Quote:
__________________
If it breaks. I didn't want it in the first place. _____________________________________________ 69 GTO \ 72 FIREBIRD \ 1/2 OF A 64 GTO \ 70 JAVELIN \ 52 FORD PU \ 51 GMC PU \ 29 FORD PU \ 85 ALFA ROMEO SPYDER \ A HANDFUL OF ODD DUCATI'S \ 88 S10 LT1 BLAZER & MY DAILY DRIVER 67 SUBURBAN. |
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#7
10-05-2025, 08:25 PM
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Took care of it today…… I put two 3mm holes in bottom of muffler ( one on each end). Had about 4oz of water come out while drilling the holes. Ran it today up to full operating temperature then put it away. Seems good now.
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#8
10-06-2025, 10:19 AM
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Always let it get hot. No problem
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| The Following User Says Thank You to burd For This Useful Post: | ||
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